package env

import (
	. "ersteller-lib"
	"os"

	"github.com/joho/godotenv"
)

const (
	EnvKeyRepositoryType       = "REPOSITORY_TYPE"
	EnvKeyDatabaseURL          = "DATABASE_URL"
	EnvKeySessionSecret        = "SESSION_SECRET"
	EnvKeyBaseURL              = "BASE_URL"
	EnvKeyIsLocal              = "IS_LOCAL"
	EnvKeyIsDev                = "IS_DEV"
	EnvKeyGoogleClientID       = "GOOGLE_CLIENT_ID"
	EnvKeyGoogleClientSecret   = "GOOGLE_CLIENT_SECRET"
	EnvKeyGoogleRedirectURL    = "GOOGLE_REDIRECT_URL"
	EnvKeyKeycloakDiscoveryURL = "KEYCLOAK_DISCOVERY_URL"
	EnvKeyKeycloakClientID     = "KEYCLOAK_CLIENT_ID"
	EnvKeyKeycloakClientSecret = "KEYCLOAK_CLIENT_SECRET"
)

type UrlApiKey struct {
	Url    string
	ApiKey string
}

type Environment struct {
	DatabaseUrl           string
	MistralApiKey         string
	IsDev                 bool
	RepositoryType        string
	GoogleSheetsCredPath  string
	GoogleSheetsSpreadId  string
	GoogleSheetsSheetName string
	GoogleClientId        string
	GoogleClientSecret    string
	GoogleRedirectUrl     string
	IsLocal               bool
	SessionSecret         string
	ApifyKey              string
	Keycloak              KeycloakConfig
	BaseUrl               string
}

type KeycloakConfig struct {
	DiscoveryUrl string
	CLientId     string
	ClientSecret string
}

func LoadEnvironment() Environment {
	err := godotenv.Load()
	if err != nil {
		LogError("Error loading .env file: %v", err)
		panic(err)
	}
	// Default repository type is postgres if not specified
	repoType := os.Getenv(EnvKeyRepositoryType)
	if repoType == "" {
		repoType = "postgres"
	}

	return Environment{
		DatabaseUrl:        os.Getenv(EnvKeyDatabaseURL),
		IsDev:              os.Getenv(EnvKeyIsDev) == "true" || os.Getenv(EnvKeyIsLocal) == "true",
		RepositoryType:     repoType,
		GoogleClientId:     os.Getenv(EnvKeyGoogleClientID),
		GoogleClientSecret: os.Getenv(EnvKeyGoogleClientSecret),
		GoogleRedirectUrl:  os.Getenv(EnvKeyGoogleRedirectURL),
		IsLocal:            os.Getenv(EnvKeyIsLocal) == "true",
		SessionSecret:      os.Getenv(EnvKeySessionSecret),
		BaseUrl:            os.Getenv(EnvKeyBaseURL),
		Keycloak: KeycloakConfig{
			DiscoveryUrl: os.Getenv(EnvKeyKeycloakDiscoveryURL),
			CLientId:     os.Getenv(EnvKeyKeycloakClientID),
			ClientSecret: os.Getenv(EnvKeyKeycloakClientSecret),
		},
	}
}

// EnvKeys returns all environment variable names used by the application configuration.
// This allows other packages (e.g., CLI tools) to discover the required keys
// without duplicating or hard-coding the list elsewhere.
func EnvKeys() []string {
	return []string{
		EnvKeyRepositoryType,
		EnvKeyDatabaseURL,
		EnvKeySessionSecret,
		EnvKeyBaseURL,
		EnvKeyIsLocal,
		EnvKeyIsDev,
		EnvKeyGoogleClientID,
		EnvKeyGoogleClientSecret,
		EnvKeyGoogleRedirectURL,
		EnvKeyKeycloakDiscoveryURL,
		EnvKeyKeycloakClientID,
		EnvKeyKeycloakClientSecret,
	}
}